LoRa Mesh Group P2P Mode Switching for Transmission Delay
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Solution Overview
Problem
Existing LoRa technology faces delays in message transmission due to mode switching and relay requirements in peer-to-peer communication, which can be inefficient in scenarios where direct communication is needed between LoRa devices.
Innovation Solution
A method where a first LoRa device creates a mesh group and switches to peer-to-peer (P2P) communication mode with a second LoRa device, increasing the transmission priority of target messages to ensure preferential transmission, and optionally uses a relay device based on distance considerations, allowing direct or relayed message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If LoRa devices use mesh group communication mode, then message transmission can reach more devices, but transmission delay increases due to relay requirements
Solution Approach 1:
The system dynamically switches between mesh group communication mode and P2P communication mode based on the specific communication requirements. When direct P2P communication is feasible, the system uses P2P mode to reduce delay; when broader coverage is needed, it switches to mesh group mode. This dynamic mode switching resolves the contradiction by allowing the system to optimize for either coverage or speed depending on the situation.
Solution Approach 2:
The patent introduces a mode switching mechanism as an intermediary that mediates between mesh group communication and P2P communication. The switching logic acts as a mediator that selects the appropriate communication path, allowing the system to achieve direct communication when possible (reducing delay) while maintaining mesh group capabilities for broader coverage when needed.
2Loss of time
If LoRa devices switch to P2P communication mode, then transmission delay is reduced, but communication coverage is limited
Solution Approach 1:
The communication system dynamically adjusts its mode based on real-time requirements. When P2P mode is selected for direct communication between specific devices, it achieves low delay. When mesh group mode is selected, it provides broader coverage. The system's ability to dynamically switch between modes resolves this contradiction by allowing optimization for either parameter depending on the communication scenario.
3Speed
If transmission priority of target messages is increased, then message delivery speed is improved, but system resource consumption increases
Solution Approach 1:
The patent applies local quality by assigning different transmission priorities to different message types based on their specific requirements. Only target messages that require urgent delivery receive increased transmission priority and associated energy consumption, while other messages use normal priority levels. This selective approach resolves the contradiction by concentrating resources only where necessary rather than uniformly increasing energy consumption across all communications.
Solution Approach 2:
The system changes the transmission priority parameter dynamically based on message type and communication requirements. When P2P communication is established for target messages, the transmission priority parameter is increased to ensure fast delivery. For other communications or when P2P mode is not used, the priority parameter remains at normal levels, thus avoiding unnecessary energy consumption while still achieving fast delivery when needed.
Data Source
AI summary
A message transmission method and related devices are provided in the disclosure. The method includes the following. A first long range (LoRa) device creates a LoRa mesh group. Based on a peer-to-peer (P2P) communication requirement with a second LoRa device belonging to the LoRa mesh group, the first LoRa device switches to a P2P communication mode, transmits a mode switching instruction to the second LoRa device, and increases a transmission priority associated with a target message type to a predetermined transmission priority. The mode switching instruction is used to instruct the second LoRa device to switch to the P2P communication mode. The target message type is the type of a message that needs to be transmitted in P2P communication between the first LoRa device and the second LoRa device. The first LoRa device transmits a message of the target message type to the second LoRa device.